查询词典 reflectometer

This paper presents the principle of optic time domain reflectometer and the fault location of optic fiber cable line by OTDR.

介绍了光时域反射仪的测试原理及其对光缆线路中经常出现的光纤故障点进行了分析，并简述了用OTDR测量时应注意的问题。

An improved multi port reflectometer calibration method using five unit vectors with arbitrary phase is described.

一、引 言校准方法是多端口反射计技术的主要研究课题之一〔1〕。

In chapter 4, the in situ measurement system composed of the six-port reflectometer and the coaxial probe is introduced and some guidelines for in situ measurement is highlighted.

第二章建模和计算先对建模方法和反演方法进行了概述，然后建立了同轴探头的谱域全波模型，着重讨论了伽辽金矩量法求解积分方程有关的积分计算问题，分析了同轴探头高次模式的影响，最后给出了波导探头的谱域模型。

The calibration of a four state four port reflectometer performed with the presented method and unimproved method shows good agreement between computing results.

对同一响应方程，可以采用不同的校准方法来确定反射计的系统复常数。

Development of feed through system of UHV motive sealing for reflectometer

常用的预抽泵有分子筛吸附泵或机械泵加分子筛吸附阱。

A Brillouin scattering-based time domain reflectometer is designed.

设计了基于布里渊散射的光时域反射计。

Improvement of Spatial Resolution for Strain Measurement with Brillouin Optical Time-Domain Reflectometer by Fitting Method Based on Equivalent Optical Pulse.

提高布里渊光时域反射应变仪测量空间分辨力的等效脉冲光拟合法。

The development of a characteristic heterodyne millimeter wave reflectometer used for density measurement on nuclear fusion plasma was reported.

报道了用于测量核聚变等离子体密度的毫米波反射仪，实验表明其空间分辨能力：横向绝对分辨率ΔRp=0 。

Therefor the principle of designing the actuator based on OTDR (optical time domain reflectometer) and SMA are analyzed, and the actuator's physical model are put forward too.

本文分析了基于OTDR和SMA设计温度阈值执行器的原理，提出了执行器的物理模型。

The principle,advantages,disadvantages,application areas and the problems in application of the distributed optical fiber sensors based on optical time domain reflectometer are summerized.

总结了基于光时域反射(OTDR，BOTDR，ROTDR)的分布式光纤传感器的原理、优缺点、应用领域以及在应用中存在的问题。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。